TODAY NOV23
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 4220Sat100%90%
  • 3617Sun70%30%
  • 3722Mon40%40%
  • 3823Tue
  • 3619Wed
daynightWeather update from JETTE at
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Weather Quick Facts

  • The highest monthly average temperature in Swan Lake for July is 67.6 degrees
  • The lowest monthly average temperature in Swan Lake for December is 23.2 degrees
  • The most monthly precipitation in Swan Lake occurs in June with 3.1 inches
  • The air quality index in Swan Lake is 12% better than the national average
  • The pollution index in Swan Lake is 90% better than the national average

Compare Swan Lake, MT Weather

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      Swan Lake Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January16°F32°F24°F1.5"
      February19°F38°F28°F1.0"
      March26°F48°F36°F1.3"
      April31°F57°F43°F1.4"
      May38°F68°F52°F1.7"
      June44°F74°F59°F3.1"
      July48°F86°F68°F1.0"
      August46°F84°F65°F0.8"
      September39°F73°F55°F1.2"
      October31°F57°F43°F1.5"
      November25°F42°F33°F1.4"
      December16°F30°F23°F1.9"

      Swan Lake air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexSwan LakeMontanaNational
      Air quality index373442
      Pollution index260,100834,4732,726,193

      Swan Lake air quality

      MeasurementTotal
      Days measured365
      Days with good air quality302
      Days with moderate air quality62
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.004%
      Carbon Tetrachloride0.000%
      Lead0.002%
      Mercury0.000%

      Average monthly Swan Lake temperature with heat index

      Swan Lake monthly precipitation with daily maximum

      Swan Lake monthly snow depth with daily maximum

      Swan Lake monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bear Dance, MT2273726.0%
      Woods Bay, MT7783726.0%
      Finley Point, MT4863726.0%
      Kings Point, MT2063726.0%
      Bigfork, MT4,7333726.0%
      Swan Lake, MT2023726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Fairford, AL2024216.0%
      Ratcliff, AR2023628.0%
      Carrizo, AZ2024412.0%
      Greenhorn, CA2024412.0%
      Alpine, CO2024412.0%
      Swan Lake, MT2023726.0%
      Source: The Swan Lake, MT weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.